"Notes from the Underground" is a novel by Fyodor Dostoevsky that explores the inner psyche of its narrator, a bitter and reclusive underground man. The novel is divided into two parts: the first part is a series of philosophical musings on the meaning of existence, while the second part is a series of vignettes that showcase the narrator's interactions with society. Through the narrator's bleak and misanthropic worldview, the novel delves into themes of human freedom, alienation, and the irrationality of human nature. The novel's unique narrative style, combining elements of diary entries, philosophical treatises, and fiction, makes it a pioneering work of existentialist and psychological literature.